Double-core optical fiber adapter and optical fiber connector

Abstract

The utility model discloses a twin-core optical fiber adapter and an optical fiber connector, the twin-core optical fiber adapter comprises an inner adapter, the inner adapter comprises two slots and a connecting platform, the connecting platform is arranged at the outer side of the outer frame of the slots, the length of the connecting platform does not reach the end face position of the outer frame of the slots in the length direction of the inner adapter, and the outer frame of the inner adapter is provided with a through hole. The height of the connecting platform is smaller than the height of the outer surface of the inner adapter in the height direction of the inner adapter, that is, the connecting platform forms a concave space on the inner adapter, so that a connecting space is provided for a tile of the outdoor optical fiber connector, and the tile of the outdoor optical fiber connector is used for protecting a connector of the outdoor optical fiber connector. By arranging the connecting platform, an avoiding and connecting space is provided for the tile of the outdoor optical fiber connector, so that under the condition that the optical fiber head of the outdoor optical fiber connector is protected, accurate butt joint between the outdoor optical fiber connector and the double-core optical fiber adapter is realized, and the optical fiber connecting accuracy is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber connection, specifically to a dual-core optical fiber adapter and an optical fiber connector. Background Technology

[0002] With the rapid development of fiber optic communication technology, the demand for high-density fiber optic connections in scenarios such as data centers and 5G networks is increasing daily. LC fiber optic connectors, with their advantages of miniaturization and low loss, are gradually becoming a core component of high-density cabling. As a key supporting component of LC connectors, LC dual-core adapters play a crucial role in achieving full-duplex communication and increasing port density. Because dual-core fiber optic adapters must be manufactured according to industry standards, and fiber optic connectors typically have protective structures at the fiber optic head, interference can occur when connecting them. This interference can cause movement between the fiber optic connector and the dual-core fiber optic adapter, affecting the stability of the connection and consequently the accuracy of the fiber optic connection.

[0003] Therefore, how to improve the connection accuracy of the fiber optic connection between the fiber optic connector and the dual-core fiber optic adapter while protecting the fiber optic head in the fiber optic connector has become an urgent technical problem to be solved. Utility Model Content

[0004] Based on the above situation, the main objective of this utility model is to provide a dual-core fiber optic adapter and a fiber optic connector, so as to improve the connection accuracy of the fiber optic connection between the fiber optic connector and the dual-core fiber optic adapter while protecting the fiber optic head in the fiber optic connector.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, this utility model discloses a dual-core optical fiber adapter, including an inner adapter, the inner adapter comprising:

[0007] Two slots are separated by a slot frame inside the inner adapter. Each slot has a placement position for placing a ceramic sleeve. The slots are used for the inner adapter to be plugged into an outdoor fiber optic connector.

[0008] A connection platform is disposed on the outside of the slot outer frame. The length of the connection platform does not reach the end face of the slot outer frame in the length direction of the inner adapter, and the height of the connection platform is less than the height of the outer surface of the inner adapter in the height direction of the inner adapter, so as to provide connection space for the tile of the outdoor fiber optic connector, wherein the tile is used to protect the fiber optic head of the outdoor fiber optic connector.

[0009] Optionally, it also includes:

[0010] A partition rib is disposed between the connection platform and the slot frame along the height direction of the adapter, separating a first connection space and a second connection space to provide connection space for the fiber optic head of the outdoor fiber optic connector.

[0011] Optionally, the connection platform is provided with a first connection channel and a second connection channel, wherein the first connection channel is coaxial with the first connection space and the second connection channel is coaxial with the second connection space.

[0012] Optionally, it also includes:

[0013] Connecting walls are disposed on opposite sides of the connecting platform, and the connecting walls are used to abut against the tiles of the outdoor fiber optic connector.

[0014] Optionally, the connecting wall includes a guide wall and a side wall that are connected to each other. The guide wall extends obliquely from one end of the connecting platform toward the central axis of the inner adapter until it is connected to one end of the side wall.

[0015] Optionally, the inclination angle of the guide wall is 15° to 40°.

[0016] Optionally, the internal adapter is provided with a connection part, and the dual-core fiber optic adapter further includes:

[0017] The outer casing is provided with a snap-fit ​​portion that mates with the connecting portion to securely connect with the inner adapter.

[0018] Optionally, it also includes:

[0019] An elastic element is disposed between the outer shell and the inner adapter. One end of the elastic element abuts against the inner wall of the outer shell, and the other end of the elastic element abuts against a lug disposed on the outer periphery of the inner adapter.

[0020] Secondly, this utility model discloses an optical fiber connector, comprising:

[0021] The inner core has a connection slot for inserting the fiber optic head.

[0022] A sleeve covers the outside of the inner core. One end of the sleeve is provided with a tile, which covers the outside of the optical fiber head to protect it. The tile is inserted into the connection platform in the dual-core optical fiber adapter. The tile is inserted into the connection space provided by the connection platform to enable the optical fiber connector to be precisely mated with the dual-core optical fiber adapter.

[0023] Optionally, the inner core has different cross sections at different positions along the axial direction of the fiber optic connector, including closed cross sections and open cross sections, wherein the open cross section includes a radially connected fiber optic hole and enlarged holes symmetrically arranged on both sides of the fiber optic hole.

[0024] Beneficial effects:

[0025] According to an embodiment of this utility model, a dual-core fiber optic adapter and a fiber optic connector are disclosed. The dual-core fiber optic adapter includes an inner adapter with two slots and a connecting platform. The two slots are separated by an outer frame and disposed inside the inner adapter. The slots provide a insertion channel for the inner adapter to be inserted into an outdoor fiber optic connector. The connecting platform is disposed outside the outer frame of the slots. The length of the connecting platform does not reach the end face of the outer frame of the slots in the length direction of the inner adapter, and the height of the connecting platform is less than the height of the outer surface of the inner adapter in the height direction. That is, the connecting platform forms a recessed space on the inner adapter, thereby providing connection space for the tile of the outdoor fiber optic connector, which is used to protect the connector head of the outdoor fiber optic connector. By setting the connecting platform, a clearance and connection space is provided for the tile of the outdoor fiber optic connector, thereby enabling precise docking between the outdoor fiber optic connector and the dual-core fiber optic adapter while protecting the fiber head of the outdoor fiber optic connector, further ensuring the accuracy of the fiber optic connection and improving the reliability of the fiber optic connection.

[0026] Other beneficial effects of this utility model will be explained in detail through the introduction of specific technical features and technical solutions in the specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0027] The preferred embodiment of a dual-core fiber optic adapter and fiber optic connector of the present invention will be described below with reference to the accompanying drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a dual-core fiber optic adapter disclosed in this embodiment;

[0029] Figure 2 This is a schematic diagram of the structure of the inner adapter in a dual-core fiber optic adapter disclosed in this embodiment;

[0030] Figure 3 This is a front view of a dual-core fiber optic adapter disclosed in this embodiment;

[0031] Figure 4 This is a partial structural schematic diagram of an optical fiber connector disclosed in this embodiment;

[0032] Figure 5a This is a schematic diagram of an optical fiber connector disclosed herein;

[0033] Figure 5b for Figure 5a A cross-sectional view of the axially formed section of the fiber optic connector at position AA, as disclosed in the paper.

[0034] Figure 5c for Figure 5a A cross-sectional view of the axially formed section of the fiber optic connector at the BB position disclosed in the paper;

[0035] Figure 5d for Figure 5a A cross-sectional view of the fiber optic connector axially formed at the CC position as disclosed in the paper.

[0036] Figure 5e for Figure 5a The cross-sectional view of the fiber optic connector axially formed at the DD position disclosed in the paper. Detailed Implementation

[0037] The present invention will now be described based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0038] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0039] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0040] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] To improve the connection accuracy of the fiber optic connection between the fiber optic connector and the dual-core fiber optic adapter while protecting the fiber optic connector's fiber optic tip, this embodiment discloses a dual-core fiber optic adapter and a fiber optic connector. Please refer to... Figure 1 , Figure 1This is a schematic diagram of a dual-core fiber optic adapter disclosed in this embodiment. The dual-core fiber optic adapter 10 includes an inner adapter 11 and a housing 12, wherein the inner adapter 11 is connected to the housing 12. In specific implementations, the inner adapter 11 and the housing 12 can be detachably connected or fixedly connected.

[0042] In an optional embodiment, the inner adapter 11 is provided with a connecting portion 118, and the outer shell 12 is provided with a snap-fit ​​portion 121 that mates with the connecting portion 118, thereby fastening the outer shell 12 and the inner adapter 11 together through the engagement of the connecting portion 118 and the snap-fit ​​portion 121. In a specific implementation, the snap-fit ​​portion 121 is a snap-fit ​​groove that penetrates the side wall of the outer shell 12. In this embodiment, the snap-fit ​​groove directly penetrates the outer shell 12, which provides sufficient snap-fit ​​space for the inner adapter 11 and the outer shell 12, and also reduces the thickness of the outer shell 12, thereby reducing the size of the dual-core fiber optic adapter.

[0043] In an optional embodiment, the dual-core fiber optic adapter 10 further includes an elastic element disposed between the outer shell 12 and the inner adapter 11. One end of the elastic element abuts against the inner wall of the outer shell 12, and the other end abuts against a lug provided on the outer periphery of the inner adapter 11. In this embodiment, one end of the elastic element abuts against the lug, and the other end abuts against the inner wall of the outer shell 12. After the inner adapter 11 and the outer shell 12 are engaged, the elastic element is fixed between the inner adapter 11 and the outer shell 12, thereby providing a buffering effect on the connection between the inner adapter and the outer shell. In specific implementations, the elastic element can be a spring or a component with elasticity, such as silicone. An elastic element is provided between the inner adapter 11 and the outer shell 12. When the inner adapter 11 is installed, it can make the inner adapter 11 fit tightly with the outer shell 12 under the action of the elastic element, thereby improving the connection reliability between the inner adapter 11 and the outer shell 12. On the other hand, it can also play a certain buffering role when making fiber optic connections, thereby ensuring that the fiber optic heads of the indoor fiber optic connector and the outdoor fiber optic connector are not damaged by rigid mating during the connection process, ensuring the fiber optic connection accuracy and improving the reliability of the fiber optic connection.

[0044] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the inner adapter in a dual-core fiber optic adapter disclosed in this embodiment. Figure 3 This is a front view of a dual-core fiber optic adapter disclosed in this embodiment, as shown below. Figure 2 and Figure 3 As shown, the internal adapter 11 includes:

[0045] Two slots 111 are separated by a slot frame 112 and disposed inside the inner adapter 11. Each slot 111 has a placement position for a ceramic sleeve 1111. The slots 111 are used for insertion between the inner adapter 11 and the outdoor fiber optic connector. In this embodiment, the two slots 111 are arranged side-by-side inside the inner adapter 11. Specifically, as shown... Figure 2 As shown, two slots 111 are arranged horizontally side by side inside the inner adapter 11. During fiber optic connection, the outdoor fiber optic connector is located from the left side of slot 111. Figure 2 Insert the dual-core fiber optic adapter into slot 111 in the direction shown in the diagram to achieve the connection between the dual-core fiber optic adapter and the outdoor fiber optic connector.

[0046] A connection platform 113 is located outside the slot outer frame 112. The length of the connection platform 113 does not reach the end face of the slot outer frame 112 in the length direction of the inner adapter 11, and the height of the connection platform 113 is less than the height of the outer surface of the inner adapter 11 in the height direction of the inner adapter 11, so as to provide connection space for the tile of the outdoor fiber optic connector, wherein the tile is used to protect the fiber optic head of the outdoor fiber optic connector.

[0047] In this embodiment, the connecting platform 113 is located outside the slot outer frame 112, and the length of the connecting platform 113 is less than the length of the slot outer frame 112. That is to say, the connecting platform 113 does not completely cover the top of the slot outer frame 112. One end of the connecting platform 113 is not flush with one end face of the slot outer frame 112, and there is a certain distance between the end of the connecting platform 113 and one end face of the slot outer frame 112. Therefore, when the outdoor fiber optic connector is inserted, it can provide a clearance space for the outdoor fiber optic connector, which facilitates the insertion of the outdoor fiber optic connector.

[0048] Furthermore, the height of the connection platform 113 is less than the height of the outer surface of the inner adapter 11 in the height direction of the inner adapter 11. In other words, the connection platform 113 is recessed on the inner adapter 11. This height difference between the connection platform 113 and the outer surface of the inner adapter 11 provides connection space for the tile of the outdoor fiber optic connector. When the outdoor fiber optic connector is inserted into the dual-core fiber optic adapter, the tile can be inserted into this connection space, thereby achieving precise mating between the outdoor fiber optic connector and the dual-core fiber optic adapter. In specific implementation, the tile of the outdoor fiber optic connector is used to protect the fiber optic head of the outdoor fiber optic connector. The connection platform 113 is set on the dual-core fiber optic adapter, and the connection platform 113 provides clearance and connection space for the insertion of the outdoor fiber optic connector. This ensures that the fiber optic head in the outdoor fiber optic connector is protected while achieving precise mating between the outdoor fiber optic connector and the dual-core fiber optic adapter, guaranteeing fiber connection accuracy and improving the reliability of the fiber optic connection.

[0049] In an optional embodiment, the inner adapter 11 further includes a partition rib 114, which is disposed along the height direction of the inner adapter 11 between the connecting platform 113 and the slot outer frame 112, separating a first connecting space 115 and a second connecting space 116 to provide connecting spaces for the fiber optic heads of the outdoor fiber optic connector. In this embodiment, the partition rib 114 is disposed along the height direction of the inner adapter 11 between the connecting platform 113 and the slot outer frame 112, thereby dividing the space between the connecting platform 113 and the slot outer frame 112 into a first connecting space 115 and a second connecting space 116. When the outdoor fiber optic connector is inserted, the dual-core fiber optic heads in the outdoor fiber optic connector can be inserted into the corresponding connecting spaces respectively, thereby using the first connecting space 115 and the second connecting space 116 to limit the dual-core fiber optic heads to a certain extent, thereby ensuring the accuracy of the fiber optic connection.

[0050] In an optional embodiment, the connection platform 113 is further provided with a first connection channel 1131 and a second connection channel 1132, wherein the first connection channel 1131 is coaxial with the first connection space 115, and the second connection channel 1132 is coaxial with the second connection space 116. In this embodiment, the connection platform 113 is provided with a first connection channel 1131 and a second connection channel 1132. The first connection channel 1131 and the second connection channel 1132 are used to provide an insertion channel for the protruding structure on the fiber optic head when the fiber optic head of the outdoor fiber optic connector is inserted, and to limit the protruding structure, thereby ensuring that the fiber optic head will not wobble inside the adapter after the outdoor fiber optic connector is inserted, thus ensuring the accuracy of the fiber optic connection.

[0051] In an optional embodiment, the inner adapter 11 further includes connecting walls 117, which are disposed opposite to each other on both sides of the connecting platform 113. When the outdoor fiber optic connector is inserted into the adapter, the tile in the outdoor fiber optic connector used to protect the fiber optic head abuts against the connecting walls 117. That is, when the outdoor fiber optic connector is inserted into the adapter, the tile of the outdoor fiber optic connector abuts against the connecting walls 117. Through the two oppositely disposed connecting walls 117, while utilizing the connecting platform to provide connection space for the tile of the outdoor fiber optic connector, the position of the tile of the outdoor fiber optic connector can also be limited, thereby ensuring the stability after the fiber is inserted, thus ensuring the accuracy of the fiber optic connection and improving the reliability of the fiber optic connection.

[0052] In an optional embodiment, the connecting wall 117 includes a guide wall 1171 and a side wall 1172 connected to each other. The guide wall 1171 extends obliquely from one end of the connecting platform 113 toward the central axis of the inner adapter 11 until it connects with one end of the side wall 1172. In this embodiment, the connecting wall 117 includes a guide wall 1171 that serves a guiding function and a side wall 1172 that is parallel to the central axis of the inner adapter 11. The guide wall 1171 is an oblique structure, and its oblique direction is from one end of the connecting platform 113 toward the central axis of the inner adapter 11, that is, along the insertion direction of the outdoor fiber optic connector, it is oblique toward the central axis of the inner adapter 11 until it connects with one end of the side wall 1172. The guide wall 1171 is designed to guide the tile of the outdoor fiber optic connector when it is inserted, so that the tile of the outdoor fiber optic connector can be smoothly inserted into the adapter through the guide wall, avoiding collision between the outdoor fiber optic connector and the adapter during insertion, thereby ensuring the accuracy of the fiber optic connection and improving the reliability of the fiber optic connection.

[0053] In an optional embodiment, the tilt angle of the guide wall 1171 is 15° to 40°. In this embodiment, the specific value of the tilt angle of the guide wall 1171 is 15° to 40°. By limiting the angle of the guide wall 1171, it can both guide the insertion of the outdoor fiber optic connector tile and limit the outdoor fiber optic connector after it is inserted. This can prevent collisions between the outdoor fiber optic connector and the adapter during insertion and ensure a stable connection between them. This, in turn, ensures the accuracy and reliability of the fiber optic connection from multiple aspects.

[0054] Please refer to Figure 4 , Figure 4 This is a partial structural schematic diagram of a fiber optic connector disclosed in this embodiment. Figure 4 As shown, the fiber optic connector includes an inner core 21 and a sleeve 22, wherein:

[0055] The inner core 21 has a connection slot for inserting the fiber optic head 210. The dual-core fiber optic head 210 is inserted into the connection slot and thus fixed inside the inner core 21.

[0056] A sleeve 22 covers the outer side of the inner core 21. One end of the sleeve 22 has a tile 221 that covers the outer side of the fiber optic connector 210 to protect it. The tile 221 is inserted into the connection platform 113 in the dual-core fiber optic adapter 10, allowing the fiber optic connector 20 to precisely align with the dual-core fiber optic adapter 10. In this embodiment, the sleeve 22 has a hollow cavity. The sleeve 22 covers the outer side of the inner core 21, enclosing it. After the dual-core fiber optic connector 210 is inserted into the connection slot of the inner core 21, the fiber optic connector 210 extends out of the inner core 21. Furthermore, the length of the tile 221 at one end of the sleeve 22 is greater than or equal to the length of the fiber optic connector 210 extending out of the inner core 21, thus allowing the tile 221 to cover the outer side of the fiber optic connector 210 and protect it. In the specific implementation process, a card 222 is also provided on the sleeve 22 opposite to the tile 221. The card 222 can be directly plugged into the inner adapter 11 of the dual-core fiber optic adapter 10 during the insertion process of the fiber optic connector 20 and the dual-core fiber optic adapter 10, without the need to connect to the platform.

[0057] Please see Figures 5a to 5e , Figure 5a This is a schematic diagram of an optical fiber connector according to the present disclosure. Figure 5b for Figure 5a The cross-sectional view of the fiber optic connector axially formed at position AA, as disclosed in the paper. Figure 5c for Figure 5a The cross-sectional view of the fiber optic connector axially formed at the BB position disclosed in the paper. Figure 5d for Figure 5a The cross-sectional view of the fiber optic connector axially formed at the CC position disclosed in the paper. Figure 5e for Figure 5a The cross-sectional view of the fiber optic connector axially formed at the DD position disclosed in the paper.

[0058] like Figure 5b As shown, the inner core 21 has an open cross-section in the axial direction. This open cross-section includes a radially communicating fiber optic hole 211 and symmetrically arranged enlarged holes 212 on both sides of the fiber optic hole. In this embodiment, the inner core 21 has an open cross-section, which includes a radially communicating fiber optic hole 211. The fiber optic hole 211 is used to place the fiber. Enlarged holes 212 are symmetrically arranged on both sides of the fiber optic hole 211 for filling and fixing with adhesive. The enlarged holes 212 also communicate with the outside. The specific shape of the enlarged holes 212 is not specifically limited here. Figures 5c to 5eAs shown, the inner core 21 can have different cross-sectional shapes at different positions in the axial direction. In addition, the inner core 21 can also have a closed cross-section, which means that the inner core 21 as a whole has a closed cross-section at a certain position in the axial direction. A closed cross-section means that it does not have holes that do not communicate with the outside in the axial direction. In the specific implementation, the inner core 21 can be composed of multiple components, as long as the assembled inner core 21 can form a closed cross-section in the axial direction, it is not required that it must be a closed cross-section formed by a single component.

[0059] The dual-core fiber optic adapter disclosed in this utility model includes an inner adapter, which comprises two slots and a connecting platform. The two slots are separated by an outer frame and disposed inside the inner adapter. The slots provide a insertion channel for the inner adapter to be inserted into an outdoor fiber optic connector. The connecting platform is disposed outside the outer frame of the slots. The length of the connecting platform does not reach the end face of the outer frame of the slots in the length direction of the inner adapter, and the height of the connecting platform is less than the height of the outer surface of the inner adapter in the height direction. That is, the connecting platform forms a recessed space on the inner adapter, thereby providing connection space for the tile of the outdoor fiber optic connector, which is used to protect the connector head of the outdoor fiber optic connector. By setting the connecting platform, a clearance and connection space is provided for the tile of the outdoor fiber optic connector, thereby enabling precise docking between the outdoor fiber optic connector and the dual-core fiber optic adapter while protecting the fiber head of the outdoor fiber optic connector, further ensuring the accuracy of the fiber optic connection and improving the reliability of the fiber optic connection.

[0060] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0061] It should be understood that the above-described embodiments are merely exemplary and not restrictive. Without departing from the basic principles of this utility model, any obvious or equivalent modifications or substitutions made by those skilled in the art regarding the above details will be included within the scope of the claims of this utility model.

Claims

1. A dual-fiber optic adapter, comprising: The inner adapter (11) comprises: Two slots (111) are arranged inside the inner adapter (11) and are separated by a slot outer frame (112), and each of the two slots (111) is provided with a placing position for placing a ceramic sleeve (1111), and the slot (111) is used for plugging the inner adapter (11) with an outdoor fiber connector; A connecting platform (113) is arranged outside the slot outer frame (112), the length of the connecting platform (113) does not reach the end surface position of the slot outer frame (112) in the length direction of the inner adapter (11), and the height of the connecting platform (113) is less than the height of the outer surface of the inner adapter (11) in the height direction of the inner adapter (11), so as to provide a connecting space for a tile of the outdoor fiber connector, and the tile is used for protecting a fiber head of the outdoor fiber connector.

2. The dual-fiber optic adapter of claim 1, wherein, Further comprising: A separation rib (114) is arranged between the connecting platform (113) and the slot outer frame (112) in the height direction of the adapter (11), and separates a first connecting space (115) and a second connecting space (116) to provide a connecting space for the fiber head of the outdoor fiber connector respectively.

3. The dual-fiber optic adapter of claim 2, wherein, The connecting platform (113) is provided with a first connecting channel (1131) and a second connecting channel (1132), the first connecting channel (1131) is coaxial with the first connecting space (115), and the second connecting channel (1132) is coaxial with the second connecting space (116).

4. The dual-fiber optic adapter of claim 1, wherein, Further comprising: A connecting wall (117) is oppositely arranged on both sides of the connecting platform (113), and the connecting wall (117) is used for abutting against a tile of the outdoor fiber connector.

5. The dual-fiber optic adapter of claim 4, wherein, The connecting wall (117) comprises a guide wall (1171) and a side wall (1172) connected to each other, the guide wall (1171) extends from one end of the connecting platform (113) to the direction of the central axis of the inner adapter (11) at an inclination until connected to one end of the side wall (1172).

6. The dual-fiber optic adapter of claim 5, wherein, The inclination angle of the guide wall (1171) is 15°-40°.

7. The dual-fiber optic adapter of any of claims 1-6, wherein, The inner adapter (11) is provided with a connecting portion (118), and the double-core fiber adapter further comprises: An outer shell (12) is provided with a clamping portion (121) matched with the connecting portion (118) to be tightly connected with the inner adapter (11).

8. The dual-fiber optic adapter of claim 7, wherein, Further comprising: An elastic member is arranged between the outer shell (12) and the inner adapter (11), one end of the elastic member abuts against the inner wall of the outer shell (12), and the other end of the elastic member abuts against a lug arranged on the outer circumferential side of the inner adapter (11).

9. An optical fiber connector, characterized by, Comprise: An inner core (21) is internally provided with a connecting groove for inserting a fiber head (210); A sleeve (22) is sleeved on the outside of the inner core (21), one end of the sleeve (22) is provided with a tile (221), the tile (221) covers the outside of the fiber head (210) to protect the fiber head (210), the tile (221) is inserted into the connecting space provided by the connecting platform (113) in the dual-core fiber adapter to make the fiber connector and the dual-core fiber adapter accurately butt joint.

10. The fiber optic connector of claim 9, wherein, The inner core (21) has different cross sections at different positions in the axial direction of the fiber connector, including a closed cross section and an unclosed cross section, wherein the unclosed cross section includes a fiber hole (211) in radial communication and a counterbore (212) symmetrically arranged on both sides of the fiber hole.

Images